Pressure fluid control valve device



1939- A. D; DELLA CHIESA ET AL" 2,134,413

PRES SURE FLUID CONTROL VALVE DEVICE Original Filed March 11, 1936 iNvENToRs.

W ozw's fioe/uido/iu I L 37; Z M ATTCRNEY.

Patented Dec. 26, 1939 UNITED STATE 2,184,413 PRESSURE rum) coN'raoL VALVE DEVICE Alessandro D. Della Chiesa, New York, N. Y., and

Louis P. Froehlich, East Rutherford, N. J., assignors to Binks Manufacturing Company, Chicago, 111., a corporation of Delaware- Original application March 11, 1936, Serial No.

68,344. Divided and this application February 17, 1989, .Serial No. 256,974

2 Claims.

The present invention relates to g a pressure fluid control device of the multi-way type whereby fluid under pressure is delivered in one direction for producing a desired effect and in another direction for exhaust or release. The embodiment selected to illustrate the invention is adapted particularly for use with spraying appliances in use with printing presses or the like, as set forth in our copending application Serial No. 68.344, filed March 11, 1936, now Patent No. 2,153,548, granted I I the operation of the spray gun or the like in such apparatus.

Among the objects of the invention is to provide a novel valvedevice so constructed as to supply fluid under pressure to the operated appliance, such as a spray gun, and to return and exhaust the fluid after operation of such appliance.

Another object is to provide a valve device having a main passage having a spring operated valve therein for controlling the passage of fluid, and an auxiliary or, exhaust passage connected to the main passage, as on the discharge side of the valve thereof, "and having an auxiliary valve means for controlling th exhaust of the fluid therethrough. One of the elements of the auxiliary valve means is connected to the movable element of the valve of the main passage and another of its elements is so movable in the exhaust passage by an actuating means as to first close the normally open auxiliary valve means and then to open the main valve against the forces of springs normally holding the main valve closed and the auxiliary valve means open. An opposite movement of the actuator permits the main valve to first close and the auxiliary valve'means to openunder the forces of the springs, there being a spring acting against an element of the auxiliary valve means to normally hold it open, such spring being weaker than the spring for the main valve.

Other objects, advantages, capabilities, features and the like are comprehended by the invention as will later appear and as are inherently possessed by the invention.

Referring to the drawing:

' Fig. 1 is a longitudinal sectional view through a valve device constructed in accordance with the invention;

Fig. 2 is a transverse sectional view taken in a plane represented by line 2-2 of Fig. 1 of the drawing; and

ed a tubular extension 2| of the valve it, this, extension being connected to or rigid with the by the 'cam (not shown) itself.

Fig. 3 is a plan view with a part in broken section of a detail of the device.

Referring more in detail tothe drawing, the embodiment selected to illustrate the invention is shown as comprising a valve body ll provided 0' with a fluid inlet passage H to which is connected an inlet duct I2. The body ID has a, receiving chamber l3 closed at an end thereof by a plug l4.

At the inner end of the chamber is provided a valve seat means IS with which'normally seats a 10 main or control valve member l6. Against the valve member l6 acts a spring I 1 located in the chamber l3 and normally holding the valve member [6 closed orto its seat IS, the spring ll reacting against the plug l4.

At the other side of the valve means lS-li I and in alinement with the chamber I3 is located a delivery chamber with which is connected a delivery passage l8 leading and connected to an outlet duct IS, the latter being connected to the operated. appliance, such as a spray gun (not shown). j

In alinement with the chamber 2|} the body II is provided with a bore in which is slidably mountvalve member It, The extension is provided with a return chamber 22 which is always in communication with the chamber 20, and a chamber 2|", between which chambers 2| and 22 is pro- 3o' an exhaust valve element 24 is adapted to close and seat as later explained.

To the valve element 24 is connected a valve stem 26 which is axially slidable in the valve member I6 and which extends into the socket of a hub portion 26 of the valve member IS. A spring 21 is located in the hub portion 28 to act against the end of the stem so as to normally hold the auxiliary valve member 24 in open or unseated position. To the valve element 24 is also connected a stem or rod 28 which has an enlargement 28 to provide a shoulder for abutting against the inner end of the plug screwed into the end of the body In, as shown. The stem 2! also has a reduced diameter portion 28' which is slidable through the plug 28 and extends exteriorly for forcible engagement by a cam operated or actuated plunger 80, or even directly vided an exhaust valve seat means 28 with which The extension 2| is suitably provided with an elongated aperture at so located as to be always in communication with an exhaust or discharge passage 32 provided in the body Ill.

In operation the cam or other actuating means as operates either byway oi the rod" or directly on the stem 28" to first close the valve 23-2l against the force of the spring 21, and then move the extension 2| with the rigidly connected valve 8 member ii to open the valve i5--l8 against the force of the spring l1; and when moving in the opposite direction to permit the valve iS-li to first close, and the valve, 22-24 to then open- ,under the forces oi the springs l1 and 21. In' 10 this way, the exhaust passage is flrstcut oil andthe pressure fluid passage opened to allow the pressure fluid to operate the operated appliance,

' and then the fluid passage is cut oil and the fluid allowed to exhaust by way of the valve 23-2! II and the dischargechamber 2i and discharge passage or outlet 32.

While we have herein described and upon the drawings shown an embodiment of. our invention,

it is to be understood that our invention is notlimited thereto, but comprehends other stru tures, constructions, details, arrangements or parts, features, and the like without departing from the spirit of the invention;

Having thus disclosed the invention, we

55 i. A pressure fluid control valve device comprising a body provided with a receiving chamher, a delivery chamber, and a bore, a valve seat means between said chamber, a main valve means having a valve member for seating on said seat ab means and having an extension slidable in said bore, a spring in said receiving chamber and acting against said valve member for normally holding said valve member to its seat on the seat means, said extension comprising a'return cham 35 her, a discharge chamber and a valve seat means between said latter chambers, an auxiliary'valve 'slidably carried by said extension and adapted to seat on said latter seat means, a spring carried by said main valve means and acting on said 1.0 auxiliary valve for normally holding said auxiliary valve in open and unseated position, an abutment means carried by said body and so located as to act as a limit stop for said auxiliary valve when in open position, a discharge passage connected to said discharge chamber, said return chamber being in communication with said delivery cham- 5 ber, and an actuating element so associated with said auxiliary valve as to move it in one direction to close said auxiliary valve and open said main valve member, and to'permit the closing of said main valve member and open said auxiliary valve 10 under the forces of said springs.

.;2. A pressure fluid control valve device comprising a body provided with fluid receiving and delivery chambers and with inlet and outlet pasjsages connected respectively to said chambers, a 15 mainvalve for controlling the passage of fluid between said chambers and having a spring piessed movable element, said body having a bored extension with the bore thereof extending from said delivery chamber, an exhaust valve operable in said bore and comprising relatively movable valve parts of which a valve part is connected with 4 the movable main valve element to move therewith and another valve part is tree from said main passage which communicates at one end thereof .with said delivery chamber when said exhaust 35 valve parts are in open relation and which has a discharge outlet near the other end thereof, said body extension having a discharge port in registry with said discharge outlet.

- ALESSANDRO D. DELLA CHIESA.

LOUIS P. FROEHLICH. 

